Since | 17.5 |
int volumeindexactive(<geometry>geometry, int primnum, vector voxel)
int volumeindexactive(<geometry>geometry, string volumename, vector voxel)
<geometry>
When running in the context of a node (such as a wrangle SOP), this argument can be an integer representing the input number (starting at 0) to read the geometry from.
Alternatively, the argument can be a string specifying a geometry file (for example, a .bgeo
) to read from. When running inside Houdini, this can be an op:/path/to/sop
reference.
Returns
Whether a specific voxel in a volume primitive is active.
While volumesample
and volumeindex
will always return values for any location in space, the actual voxel array is only defined for a subset of space. For volumes, this is a square grid. For VDBs, the shape of the active area can be arbitrary.
Returns 0 if primnum
is out of range, the geometry is invalid, or the given primitive is not a volume primitive.
volume |
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